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WO2017049661A1 - 扫描驱动电路及具有该电路的液晶显示装置 - Google Patents

扫描驱动电路及具有该电路的液晶显示装置 Download PDF

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Publication number
WO2017049661A1
WO2017049661A1 PCT/CN2015/091070 CN2015091070W WO2017049661A1 WO 2017049661 A1 WO2017049661 A1 WO 2017049661A1 CN 2015091070 W CN2015091070 W CN 2015091070W WO 2017049661 A1 WO2017049661 A1 WO 2017049661A1
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WO
WIPO (PCT)
Prior art keywords
controllable switch
output
inverter
control
controllable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/091070
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English (en)
French (fr)
Inventor
陈彩琴
赵莽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Wuhan China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd, Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to KR1020187011027A priority Critical patent/KR102043574B1/ko
Priority to US14/888,693 priority patent/US9818358B2/en
Priority to GB1806442.8A priority patent/GB2557552B8/en
Publication of WO2017049661A1 publication Critical patent/WO2017049661A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3674Details of drivers for scan electrodes
    • G09G3/3677Details of drivers for scan electrodes suitable for active matrices only
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/08Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809Several active elements per pixel in active matrix panels
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243Details of the generation of driving signals
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264Details of driving circuits
    • G09G2310/0281Arrangement of scan or data electrode driver circuits at the periphery of a panel not inherent to a split matrix structure
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264Details of driving circuits
    • G09G2310/0286Details of a shift registers arranged for use in a driving circuit
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264Details of driving circuits
    • G09G2310/0291Details of output amplifiers or buffers arranged for use in a driving circuit
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/08Details of timing specific for flat panels, other than clock recovery

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a scan driving circuit and a liquid crystal display device having the same.
  • a scan driving circuit is used, that is, a conventional thin film transistor liquid crystal display array process is used to fabricate a scan driving circuit on an array substrate to realize a driving method for progressive scanning.
  • the design function of the existing scan driving circuit is single, and the function of turning on all the scan lines cannot be realized, which is disadvantageous for the realization of the special functions of the liquid crystal display device.
  • the technical problem to be solved by the present invention is to provide a scan driving circuit and a liquid crystal display device having the same, which can realize the function of turning on all scanning lines, and is advantageous for realizing the special functions of the liquid crystal display device.
  • a technical solution adopted by the present invention is to provide a scan driving circuit, including:
  • a latching module configured to receive the upper control signal, the first and second clock signals, and the reset signal, and operate the upper control signal, the first and second clock signals, and the reset signal to obtain a first control signal and Decoding and outputting the first control signal;
  • a logic processing module connected to the latch module, configured to receive a first control signal output by the latch module, and perform logic operations on the first control signal, the second control signal, and the third clock signal to obtain logic control Signaling and outputting the logic control signal;
  • An output module connected to the logic processing module, configured to receive a logic control signal output by the logic processing module, and operate the logic control signal and the second control signal to obtain a scan driving signal, and scan the scan Drive signal output;
  • a scan line connected to the output module, configured to transmit a scan driving signal output by the output module to the pixel unit.
  • the latch module includes first to fourth inverters and a first controllable switch, and an input end of the first inverter is connected to the first clock signal, and an output of the first inverter
  • the terminal is connected to the low-level end of the second inverter, the second clock signal, and the high-level end of the third inverter, and the input end of the second inverter is connected to the upper-level control signal, a high level end of the second inverter is connected to an input end of the first inverter and a low end end of the third inverter, and an output end of the second inverter is connected to the third end
  • An output end of the inverter the input end of the third inverter is connected to the control signal of the current stage, the control end of the controllable switch is connected to the reset signal, and the input end of the controllable switch is connected to the open voltage end
  • An output end of the controllable switch is connected to an output end of the second inverter and an input end of the fourth inverter, and an
  • the logic processing module includes second to seventh controllable switches, and the control end of the second controllable switch is connected to the second control signal and the control end of the seventh controllable switch, the second An input end of the controllable switch is connected to the open voltage end, and an output end of the second controllable switch is connected to the input end of the third controllable switch and the fourth controllable switch, the third controllable switch The control end is connected to the output end of the fourth inverter and the control end of the fifth controllable switch, and the output end of the third controllable switch is connected to the output module and the fourth controllable switch An output end of the output terminal, the fifth controllable switch, and the seventh controllable switch, wherein the control end of the fourth controllable switch is connected to the third clock signal, and the input end of the fifth controllable switch Connecting the output end of the sixth controllable switch, the control end of the sixth controllable switch is connected to the third clock signal, and the input end of the sixth controllable switch is connected to the closed voltage end
  • the logic processing module includes second to seventh controllable switches, and a control end of the second controllable switch is connected to an output end of the fourth inverter and a control end of the fifth controllable switch,
  • the second controllable switch input end is connected to the input end of the third controllable switch and the open voltage end
  • the output end of the second controllable switch is connected to the output end of the third controllable switch
  • An input end of the fourth controllable switch, the control end of the third controllable switch is connected to the third clock signal
  • the control end of the fourth controllable switch is connected to the second control signal and the seventh a control end of the controllable switch
  • an output end of the fourth controllable switch is connected to an output end of the output module and the fifth and seventh controllable switches
  • an input end of the fifth controllable switch is connected to the An output end of the sixth controllable switch, the control end of the sixth controllable switch is connected to the third clock signal, and an input end of the sixth controllable switch is connected
  • the logic processing module includes second to seventh controllable switches, and a control end of the second controllable switch is connected to an output end of the fourth inverter and a control end of the sixth controllable switch, An input end of the second controllable switch is connected to an input end of the third controllable switch and the turn-on voltage end, and an output end of the second controllable switch is connected to an output end of the third controllable switch An input end of the fourth controllable switch, a control end of the third controllable switch is connected to the third clock signal, and a control end of the fourth controllable switch is connected to the second control signal and the a control end of the seventh controllable switch, an output end of the fourth controllable switch is connected to an output end of the output module and the fifth and seventh controllable switches, and an input end of the fifth controllable switch is connected An output end of the sixth controllable switch, the control end of the five controllable switch is connected to the third clock signal, and the input end of the sixth controllable switch is connected to
  • the logic processing module includes second to seventh controllable switches, and the control end of the second controllable switch is connected to the second control signal and the control end of the seventh controllable switch, the second An input end of the controllable switch is connected to the open voltage end, an output end of the second controllable switch is connected to an input end of the third and fourth controllable switches, and a control end of the third controllable switch is connected An output end of the fourth inverter and a control end of the sixth controllable switch, wherein an output end of the third controllable switch is connected to an output end of the output module, the fourth controllable switch, An output end of the fifth controllable switch and the seventh controllable switch, wherein a control end of the fourth controllable switch is connected to the third clock signal, and an input end of the fifth controllable switch is connected to the sixth An output end of the controllable switch, the control end of the fifth controllable switch is connected to the sixth An output end of the controllable switch, the control end of the fifth controllable switch
  • the output module includes fifth to seventh inverters, and an input end of the fifth inverter is connected to an output end of the fifth and seventh controllable switches, and an output of the fifth inverter The end is connected to the input end of the sixth inverter, the output end of the sixth inverter is connected to the input end of the seventh inverter, and the output end of the seventh inverter is connected to the scan line .
  • the logic processing module includes second to fifth controllable switches, and a control end of the second controllable switch is connected to an output end of the fourth inverter and a control end of the fourth controllable switch, An input end of the second controllable switch is connected to an input end of the third controllable switch and the turn-on voltage end, and an output end of the second controllable switch is connected to the output module and the third controllable a control end of the switch and the fourth controllable switch, the control end of the third controllable switch is connected to the third clock signal and the control end of the fifth controllable switch, and the fourth controllable switch The input end is connected to the output end of the fifth controllable switch, and the input end of the fifth controllable switch is connected to the closed voltage end.
  • the output module includes fifth and sixth inverters and a NOR gate, and an input end of the fifth inverter is connected to an output end of the fourth controllable switch, and the fifth inverter is The output terminal is connected to the first input end of the NOR gate, the second input end of the NOR gate is connected to the second control signal, and the output end of the NOR gate is connected to the input of the sixth inverter And an output end of the sixth inverter is connected to the scan line.
  • another technical solution adopted by the present invention is to provide a liquid crystal display device comprising the scan driving circuit as described above.
  • the scan driving circuit of the present invention performs a logic operation on the first control signal and the third clock signal outputted by the latch module through the logic processing module, in the second During operation of the control signal, regardless of how the potentials of the first control signal and the third clock signal change, the output module outputs a high-level scan driving signal to the scan line, thereby realizing that all scan lines are turned on.
  • the function is beneficial to the realization of special functions of the liquid crystal display device.
  • FIG. 1 is a schematic structural view of a scan driving circuit in the prior art
  • FIG. 2 is a schematic structural view of a scan driving circuit of a first embodiment of the present invention
  • FIG. 3 is a schematic structural view of a scan driving circuit of a second embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a scan driving circuit of a third embodiment of the present invention.
  • Figure 5 is a block diagram showing the structure of a scan driving circuit of a fourth embodiment of the present invention.
  • Figure 6 is a block diagram showing the structure of a scan driving circuit of a fifth embodiment of the present invention.
  • Figure 7 is a waveform diagram of a scan driving circuit of the present invention.
  • Figure 8 is a schematic view of a liquid crystal display device of the present invention.
  • FIG. 1 is a schematic structural diagram of a scan driving circuit in the prior art.
  • the logic processing module 20 in the prior art scan driving circuit includes four controllable switches for receiving the first control signal output by the latch module 10 and receiving and calculating the third clock signal.
  • the output module 30 includes three inverters for outputting the high level or low level after the operation of the received logic control signal. Scanning drive signal to the scan line, that is, in FIG.
  • FIG. 2 is a schematic structural diagram of a scan driving circuit according to a first embodiment of the present invention.
  • the scan driving circuit 1 of the present invention includes a latch module 100 for receiving a superior control signal, first and second clock signals, and a reset signal, and for the upper control signal, the first and second clocks.
  • the signal and the reset signal are operated to obtain a first control signal and the first control signal is latched and outputted;
  • the logic processing module 200 is connected to the latch module 100 for receiving the output of the latch module 100
  • the first control signal and the first control signal, the second control signal and the third clock signal are logically operated to obtain a logic control signal and output the logic control signal;
  • the output module 300 is connected to the logic processing module 200 And receiving the logic control signal output by the logic processing module 200 and operating the logic control signal and the second control signal to obtain a scan driving signal, and outputting the scan driving signal; scanning lines, connecting
  • the output module 300 is configured to transmit a scan driving signal output by the output module 300 to a pixel unit.
  • the latch module 100 includes first to fourth inverters U1-U4 and a first controllable switch T1, and an input end of the first inverter U1 is connected to the first clock signal, the first reverse The output terminal of the phase converter U1 is connected to the low level end of the second inverter U2, the second clock signal and the high level end of the third inverter U3, and the input of the second inverter U2 Connected to the upper control signal, the high level end of the second inverter U2 is connected to the input end of the first inverter U1 and the low end end of the third inverter U3, the second An output end of the inverter U2 is connected to an output end of the third inverter U3, and an input end of the third inverter U3 is connected to a control signal of the current stage, and a control end of the controllable switch T1 is connected to the reset a signal, the input end of the controllable switch T1 is connected to the open voltage terminal VGH, and the output end of the controllable switch T1
  • the logic processing module 200 includes second to seventh controllable switches T2-T7, and the control end of the second controllable switch T2 is connected to the second control signal and the control end of the seventh controllable switch T7.
  • the input end of the second controllable switch T2 is connected to the open voltage terminal VGH, and the output end of the second controllable switch T2 is connected to the input of the third controllable switch T3 and the fourth controllable switch T4.
  • the control end of the third controllable switch T3 is connected to the output end of the fourth inverter U4 and the control end of the fifth controllable switch T5, and the output end of the third controllable switch T3 is connected.
  • the input end of the sixth controllable switch T6 is connected to the input of the closed voltage terminal VGL and the seventh controllable switch T7. end.
  • the output module 300 includes fifth to seventh inverters U3-U7, and an input end of the fifth inverter U5 is connected to an output end of the fifth and seventh controllable switches T5, T7, An output end of the fifth inverter U5 is connected to an input end of the sixth inverter U6, and an output end of the sixth inverter U6 is connected to an input end of the seventh inverter U7, the seventh reverse The output of the phaser U7 is connected to the scan line.
  • FIG. 3 is a schematic structural diagram of a scan driving circuit according to a second embodiment of the present invention.
  • the scan driving circuit of the second embodiment is different from the scan driving circuit of the first embodiment in that the logic processing module 200 includes second to seventh controllable switches T2-.
  • the control end of the second controllable switch T2 is connected to the output end of the fourth inverter U4 and the control end of the fifth controllable switch T5, and the input end of the second controllable switch T2 is connected
  • the input end of the third controllable switch T3 and the open voltage end VGH, the output end of the second controllable switch T2 is connected to the output end of the third controllable switch T3 and the fourth controllable switch T4
  • the control end of the third controllable switch T3 is connected to the third clock signal, and the control end of the fourth controllable switch T4 is connected to the second control signal and the seventh controllable switch T7
  • the output end of the fourth controllable switch T4 is connected to the output end of the output module 300 and the fifth and seventh controllable switches T5, T7, and the input end of the fifth controllable switch T5 Connecting the output end of the sixth controllable switch T6, the control end of the sixth controllable switch T6 is connected to the third The clock signal, the input end of
  • FIG. 4 is a schematic structural diagram of a scan driving circuit according to a third embodiment of the present invention.
  • the scan driving circuit of the third embodiment is different from the scan driving circuit of the first embodiment in that the logic processing module 200 includes second to seventh controllable switches T2-.
  • the control end of the second controllable switch T2 is connected to the output end of the fourth inverter U4 and the control end of the sixth controllable switch T6, and the input end of the second controllable switch T2 is connected An input end of the third controllable switch T3 and the open voltage end VGH, an output end of the second controllable switch T2 is connected to an output end of the third controllable switch T3 and the fourth controllable switch An input end of the T4, the control end of the third controllable switch T3 is connected to the third clock signal, and the control end of the fourth controllable switch T4 is connected to the second control signal and the seventh controllable switch
  • the output end of the fourth controllable switch T4 is connected to the output end of the output module 300 and the fifth and seventh controllable switches T5, T7, and the input of the fifth controllable switch T5
  • the end is connected to the output end of the sixth controllable switch T6, and the control end of the five controllable switch T5 is connected to the third end The clock signal
  • FIG. 5 is a schematic structural diagram of a scan driving circuit according to a fourth embodiment of the present invention.
  • the scan driving circuit of the fourth embodiment is different from the scan driving circuit of the first embodiment in that the logic processing module 200 includes second to seventh controllable switches T2-.
  • the control end of the second controllable switch T2 is connected to the second control signal and the control end of the seventh controllable switch T7, and the input end of the second controllable switch T2 is connected to the open voltage end VGH, an output end of the second controllable switch T2 is connected to an input end of the third and fourth controllable switches T3, T4, and a control end of the third controllable switch T3 is connected to the fourth inverter An output end of the U4 and a control end of the sixth controllable switch T6, an output end of the third controllable switch T3 is connected to the output end of the output module 300, the fourth controllable switch T4, the first An output end of the fifth controllable switch T5 and the seventh controllable switch T7, the control end of the fourth controllable switch T4 is connected to the third clock signal, and the input end of the fifth controllable switch T5 is connected An output end of the sixth controllable switch T6, the control end of the fifth controllable switch T5 is connected to the third clock signal, and
  • the second to fourth controllable switches T2-T4 are all PMOS type thin film transistors, and the fifth to seventh controllable switches are all NMOS type thin film transistors.
  • the operation principle of the scan driving circuit 1 of the first to fourth embodiments is as follows:
  • the third clock signal received by the logic processing module 200 is a potential, and when the second control signal is a high level signal, the seventh controllable switch T7 is turned on, because the seventh controllable switch T7 The output of the seventh controllable switch T7 outputs a low level signal to the output module 300, and the output module 300 will receive the low power.
  • the flat signal outputs a high-level scan driving signal to the scan line after the operation of the fifth to seventh inverters, so that all the scan lines are turned on.
  • FIG. 6 is a schematic structural diagram of a scan driving circuit according to a fifth embodiment of the present invention.
  • the scan driving circuit of the fifth embodiment is different from the scan driving circuit of the first embodiment in that the logic processing module 200 includes second to fifth controllable switches T2-.
  • the control end of the second controllable switch T2 is connected to the output end of the fourth inverter U4 and the control end of the fourth controllable switch T4, and the input end of the second controllable switch T2 is connected An input end of the third controllable switch T3 and the open voltage end VGH, and an output end of the second controllable switch T2 is connected to the output module 300 and the third controllable switch T3 and the fourth An output end of the controllable switch T4, the control end of the third controllable switch T3 is connected to the third clock signal and the control end of the fifth controllable switch T5, and the input end of the fourth controllable switch T4 An output end of the fifth controllable switch T5 is connected, and an input end of the fifth controllable switch T5 is connected to the closed voltage terminal VGL.
  • the second and third controllable switches T2 and T3 are PMOS type thin film transistors
  • the fourth and fifth controllable switches T4 and T5 are NMOS type thin film transistors.
  • the output module 300 includes fifth and sixth inverters U5 and U6 and a NOR gate Y1.
  • the input end of the fifth inverter U5 is connected to the output end of the fourth controllable switch T4.
  • An output end of the fifth inverter U5 is connected to the first input end of the NOR gate Y1, and a second input end of the NOR gate Y1 is connected to the second control signal, and the output end of the NOR gate Y1 is connected.
  • An input end of the sixth inverter U6, an output end of the sixth inverter U6 is connected to the scan line.
  • the working principle of the scan driving circuit 1 of the fifth embodiment is as follows:
  • the high level signal passes through the fifth inverter U5 of the output module 300.
  • the NOR gate Y1 passes After the NAND operation, a low level signal is output to the input end of the sixth inverter U6, and the inverter U6 outputs a high level scan driving signal to the scan line, so that all scan lines are turned on. If the logic processing module 200 outputs a low-level signal, the low-level signal passes through the fifth inverter U5 of the output module 300 and outputs a high-level signal to the NOR gate Y1. An input, the second control letter No.
  • Gas outputs a high level signal to the second input end of the NOR gate Y1, and the NOR gate Y1 outputs a low level signal to the input end of the sixth inverter U6 after a NAND operation.
  • the inverter U6 outputs a scan driving signal of a high level to the scan line, thereby enabling all scan lines to implement an on function.
  • FIG. 7 is a waveform diagram of the scan driving circuit 1 of the present invention.
  • the second control signal that is, the second control signal is maintained in a high state, regardless of the first control signal and the third output by the latch module 100. Any change of the clock signal, the output module 300 outputs a high-level scan driving signal, so that all the scan lines implement an on function, after the second control signal becomes a low level signal, the scan The drive circuit 1 is working normally.
  • the upper control signal is a superior control signal Q(N-1), and the first control signal is a first control signal.
  • Q(N) the first clock signal is a first clock signal CK1
  • the second clock signal is a second clock signal XCK1
  • the reset signal is a reset signal Reset
  • the third clock signal is a third clock
  • the second control signal is a second control signal Gas
  • the scan line is a scan line Gate.
  • FIG. 8 is a schematic diagram of a liquid crystal display device of the present invention.
  • the liquid crystal display device includes the aforementioned scan driving circuit 1, and the scan driving circuit 1 is disposed at both ends of the liquid crystal display device.
  • the scan driving circuit 1 of the present invention performs a logic operation on the first control signal and the third clock signal outputted by the latch module through the logic processing module, during the operation of the second control signal, regardless of the first control signal and the The potential of the third clock signal changes, and the output module outputs a high-level scan driving signal to the scan line, thereby realizing the function of turning on all the scan lines, which is beneficial to the realization of the special function of the liquid crystal display device.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electronic Switches (AREA)

Abstract

一种扫描驱动电路(1)及液晶显示装置,所述扫描驱动电路(1)包括锁存模块(100),接收上级控制信号(Q(N-1))、第一时钟信号(CK1)、第二时钟信号(XCK1)及复位信号(Reset)并运算以获得第一控制信号(Q(N))并锁存及输出;逻辑处理模块(200)对第一控制信号(Q(N))、第二控制信号(Gas)及第三时钟信号(CK2)进行逻辑运算以获得逻辑控制信号并输出,同时输出模块(300)仅对逻辑控制信号进行运算以获得扫描驱动信号并输出;或者,逻辑处理模块(200)对第一控制信号(Q(N))及第三时钟信号(CK2)进行逻辑运算以获得逻辑控制信号并输出,同时输出模块(300)对逻辑控制信号及第二控制信号(Gas)进行运算以获得扫描驱动信号并输出;扫描线(Gate)连接输出模块(300),将扫描驱动信号传输至像素单元,以此实现所有扫描线(Gate)开启的功能。

Description

扫描驱动电路及具有该电路的液晶显示装置
【技术领域】
本发明涉及显示技术领域,特别是涉及一种扫描驱动电路及具有该电路的液晶显示装置。
【背景技术】
目前的液晶显示装置中采用扫描驱动电路,也就是利用现有薄膜晶体管液晶显示器阵列制程将扫描驱动电路制作在阵列基板上,实现对逐行扫描的驱动方式。现有的扫描驱动电路的设计功能单一,不能够实现所有扫描线开启的功能,不利于液晶显示装置特殊功能的实现。
【发明内容】
本发明主要解决的技术问题是提供一种扫描驱动电路及具有该电路的液晶显示装置,能够实现所有扫描线开启的功能,利于液晶显示装置特殊功能的实现。
为解决上述技术问题,本发明采用的一个技术方案是:提供一种扫描驱动电路,包括:
锁存模块,用于接收上级控制信号、第一及第二时钟信号及复位信号并对所述上级控制信号、第一及第二时钟信号及复位信号进行运算以获得第一控制信号并对所述第一控制信号进行锁存及输出;
逻辑处理模块,连接所述锁存模块,用于接收所述锁存模块输出的第一控制信号并对所述第一控制信号、第二控制信号及第三时钟信号进行逻辑运算以获得逻辑控制信号并将所述逻辑控制信号输出;
输出模块,连接所述逻辑处理模块,用于接收所述逻辑处理模块输出的逻辑控制信号并对所述逻辑控制信号及所述第二控制信号进行运算以获得扫描驱动信号,并将所述扫描驱动信号输出;及
扫描线,连接所述输出模块,用于将所述输出模块输出的扫描驱动信号传输至像素单元。
其中,所述锁存模块包括第一至第四反相器及第一可控开关,所述第一反相器的输入端连接所述第一时钟信号,所述第一反相器的输出端连接所述第二反相器的低电平端、所述第二时钟信号及所述第三反相器的高电平端,所述第二反相器的输入端连接所述上级控制信号,所述第二反相器的高电平端连接所述第一反相器的输入端及所述第三反相器的低电平端,所述第二反相器的输出端连接所述第三反相器的输出端,所述第三反相器的输入端连接本级控制信号,所述可控开关的控制端连接所述复位信号,所述可控开关的输入端连接开启电压端,所述可控开关的输出端连接所述第二反相器的输出端及所述第四反相器的输入端,所述第四反相器的输出端连接所述第三反相器的输入端及所述逻辑处理模块。
其中,所述逻辑处理模块包括第二至第七可控开关,所述第二可控开关的控制端连接所述第二控制信号及所述第七可控开关的控制端,所述第二可控开关的输入端连接所述开启电压端,所述第二可控开关的输出端连接所述第三可控开关及所述第四可控开关的输入端,所述第三可控开关的控制端连接所述第四反相器的输出端及所述第五可控开关的控制端,所述第三可控开关的输出端连接所述输出模块、所述第四可控开关的输出端、所述第五可控开关及所述第七可控开关的输出端,所述第四可控开关的控制端连接所述第三时钟信号,所述第五可控开关的输入端连接所述第六可控开关的输出端,所述第六可控开关的控制端连接所述第三时钟信号,所述第六可控开关的输入端连接所述关闭电压端及所述第七可控开关的输入端。
其中,所述逻辑处理模块包括第二至第七可控开关,所述第二可控开关的控制端连接所述第四反相器的输出端及所述第五可控开关的控制端,所述第二可控开关输入端连接所述第三可控开关的输入端及所述开启电压端,所述第二可控开关的输出端连接所述第三可控开关的输出端及所述第四可控开关的输入端,所述第三可控开关的控制端连接所述第三时钟信号,所述第四可控开关的控制端连接所述第二控制信号及所述第七可控开关的控制端,所述第四可控开关的输出端连接所述输出模块及所述第五及第七可控开关的输出端,所述第五可控开关的输入端连接所述第六可控开关的输出端,所述第六可控开关的控制端连接所述第三时钟信号,所述第六可控开关的输入端连接所述第七可控开关的输入端及所述关闭电压端。
其中,所述逻辑处理模块包括第二至第七可控开关,所述第二可控开关的控制端连接所述第四反相器的输出端及所述第六可控开关的控制端,所述第二可控开关的输入端连接所述第三可控开关的输入端及所述开启电压端,所述第二可控开关的输出端连接所述第三可控开关的输出端及所述第四可控开关的输入端,所述第三可控开关的控制端连接所述第三时钟信号,所述第四可控开关的控制端连接所述第二控制信号及所述第七可控开关的控制端,所述第四可控开关的输出端连接所述输出模块及所述第五及第七可控开关的输出端,所述第五可控开关的输入端连接所述第六可控开关的输出端,所述五可控开关的控制端连接所述第三时钟信号,所述第六可控开关的输入端连接所述第七可控开关的输入端及所述关闭电压端。
其中,所述逻辑处理模块包括第二至第七可控开关,所述第二可控开关的控制端连接所述第二控制信号及所述第七可控开关的控制端,所述第二可控开关的输入端连接所述开启电压端,所述第二可控开关的输出端连接所述第三及第四可控开关的输入端,所述第三可控开关的控制端连接所述第四反相器的输出端及所述第六可控开关的控制端,所述第三可控开关的输出端连接所述输出模块、所述第四可控开关的输出端、所述第五可控开关及所述第七可控开关的输出端,所述第四可控开关的控制端连接所述第三时钟信号,所述第五可控开关的输入端连接所述第六可控开关的输出端,所述第五可控开关的控制端连接所述第三时钟信号,所述第六可控开关输入端连接所述关闭电压端及所述第七可控开关的输入端。
其中,所述输出模块包括第五至第七反相器,所述第五反相器的输入端连接所述第五及第七可控开关的输出端,所述第五反相器的输出端连接所述第六反相器的输入端,所述第六反相器的输出端连接所述第七反相器的输入端,所述第七反相器的输出端连接所述扫描线。
其中,所述逻辑处理模块包括第二至第五可控开关,所述第二可控开关的控制端连接所述第四反相器的输出端及所述第四可控开关的控制端,所述第二可控开关的输入端连接所述第三可控开关的输入端及所述开启电压端,所述第二可控开关的输出端连接所述输出模块及所述第三可控开关及所述第四可控开关的输出端,所述第三可控开关的控制端连接所述第三时钟信号及所述第五可控开关的控制端,所述第四可控开关的输入端连接所述第五可控开关的输出端,所述第五可控开关的输入端连接所述关闭电压端。
其中,所述输出模块包括第五及第六反相器及或非门,所述第五反相器的输入端连接所述第四可控开关的输出端,所述第五反相器的输出端连接所述或非门的第一输入端,所述或非门的第二输入端连接所述第二控制信号,所述或非门的输出端连接所述第六反相器的输入端,所述第六反相器的输出端连接所述扫描线。
为解决上述技术问题,本发明采用的另一个技术方案是:提供一种液晶显示装置,包括如上所述任一所述的扫描驱动电路。
本发明的有益效果是:区别于现有技术的情况,本发明的扫描驱动电路通过逻辑处理模块对锁存模块输出的第一控制信号与第三时钟信号进行逻辑运算,以在所述第二控制信号工作期间,无论所述第一控制信号与所述第三时钟信号的电位如何变化,所述输出模块都输出高电平的扫描驱动信号给所述扫描线,以此实现所有扫描线开启的功能,利于液晶显示装置特殊功能的实现。
【附图说明】
图1是现有技术中扫描驱动电路的结构示意图;
图2是本发明的第一实施例的扫描驱动电路的结构示意图;
图3是本发明的第二实施例的扫描驱动电路的结构示意图;
图4是本发明的第三实施例的扫描驱动电路的结构示意图;
图5是本发明的第四实施例的扫描驱动电路的结构示意图;
图6是本发明的第五实施例的扫描驱动电路的结构示意图;
图7是本发明的扫描驱动电路的波形图;
图8是本发明的液晶显示装置的示意图。
【具体实施方式】
请参阅图1,是现有技术中扫描驱动电路的结构示意图。如图1所示,现有技术中的扫描驱动电路中的逻辑处理模块20包括四个可控开关用于接收锁存模块10输出的第一控制信号及接收第三时钟信号并对其进行运算后输出高电平或低电平的逻辑控制信号给输出模块30,所述输出模块30包括三个反相器用来对接收到的所述逻辑控制信号进行运算后输出高电平或低电平的扫描驱动信号给扫描线,也就是说,在图1中,当所述锁存模块10输出的第一控制信号及所述逻辑处理模块20接收到的第三时钟信号发生变化,则所述输出模块30输出的扫描驱动信号也会发生变化,因此不能实现所有扫描线的开启功能,不利于液晶显示装置特殊功能的实现。
请参阅图2,是本发明第一实施例的扫描驱动电路的结构示意图。如图2所示,本发明的扫描驱动电路1包括锁存模块100,用于接收上级控制信号、第一及第二时钟信号及复位信号并对所述上级控制信号、第一及第二时钟信号及复位信号进行运算以获得第一控制信号并对所述第一控制信号进行锁存及输出;逻辑处理模块200,连接所述锁存模块100,用于接收所述锁存模块100输出的第一控制信号并对所述第一控制信号、第二控制信号及第三时钟信号进行逻辑运算以获得逻辑控制信号并将所述逻辑控制信号输出;输出模块300,连接所述逻辑处理模块200,用于接收所述逻辑处理模块200输出的逻辑控制信号并对所述逻辑控制信号及所述第二控制信号进行运算以获得扫描驱动信号,并将所述扫描驱动信号输出;扫描线,连接所述输出模块300,用于将所述输出模块300输出的扫描驱动信号传输至像素单元。
所述锁存模块100包括第一至第四反相器U1-U4及第一可控开关T1,所述第一反相器U1的输入端连接所述第一时钟信号,所述第一反相器U1的输出端连接所述第二反相器U2的低电平端、所述第二时钟信号及所述第三反相器U3的高电平端,所述第二反相器U2的输入端连接所述上级控制信号,所述第二反相器U2的高电平端连接所述第一反相器U1的输入端及所述第三反相器U3的低电平端,所述第二反相器U2的输出端连接所述第三反相器U3的输出端,所述第三反相器U3的输入端连接本级控制信号,所述可控开关T1的控制端连接所述复位信号,所述可控开关T1的输入端连接开启电压端VGH,所述可控开关T1的输出端连接所述第二反相器U2的输出端及所述第四反相器U4的输入端,所述第四反相器U4的输出端连接所述第三反相器U3的输入端及所述逻辑处理模块200。在本实施例中,所述第一可控开关T1为PMOS型薄膜晶体管。
所述逻辑处理模块200包括第二至第七可控开关T2-T7,所述第二可控开关T2的控制端连接所述第二控制信号及所述第七可控开关T7的控制端,所述第二可控开关T2的输入端连接所述开启电压端VGH,所述第二可控开关T2的输出端连接所述第三可控开关T3及所述第四可控开关T4的输入端,所述第三可控开关T3的控制端连接所述第四反相器U4的输出端及所述第五可控开关T5的控制端,所述第三可控开关T3的输出端连接所述输出模块300、所述第四可控开关T4的输出端、所述第五可控开关T5及所述第七可控开关T7的输出端,所述第四可控开关T4的控制端连接所述第三时钟信号,所述第五可控开关T5的输入端连接所述第六可控开关T6的输出端,所述第六可控开关T6的控制端连接所述第三时钟信号,所述第六可控开关T6的输入端连接所述关闭电压端VGL及所述第七可控开关T7的输入端。
所述输出模块300包括第五至第七反相器U3-U7,所述第五反相器U5的输入端连接所述第五及第七可控开关T5、T7的输出端,所述第五反相器U5的输出端连接所述第六反相器U6的输入端,所述第六反相器U6的输出端连接所述第七反相器U7的输入端,所述第七反相器U7的输出端连接所述扫描线。
请参阅图3,是本发明的第二实施例的扫描驱动电路的结构示意图。如图3所示,所述第二实施例的扫描驱动电路与所述第一实施例的扫描驱动电路的区别之处在于:所述逻辑处理模块200包括第二至第七可控开关T2-T7,所述第二可控开关T2的控制端连接所述第四反相器U4的输出端及所述第五可控开关T5的控制端,所述第二可控开关T2输入端连接所述第三可控开关T3的输入端及所述开启电压端VGH,所述第二可控开关T2的输出端连接所述第三可控开关T3的输出端及所述第四可控开关T4的输入端,所述第三可控开关T3的控制端连接所述第三时钟信号,所述第四可控开关T4的控制端连接所述第二控制信号及所述第七可控开关T7的控制端,所述第四可控开关T4的输出端连接所述输出模块300及所述第五及第七可控开关T5、T7的输出端,所述第五可控开关T5的输入端连接所述第六可控开关T6的输出端,所述第六可控开关T6的控制端连接所述第三时钟信号,所述第六可控开关T6的输入端连接所述第七可控开关T7的输入端及所述关闭电压端VGL。
请参阅图4,是本发明的第三实施例的扫描驱动电路的结构示意图。如图4所示,所述第三实施例的扫描驱动电路与所述第一实施例的扫描驱动电路的区别之处在于:所述逻辑处理模块200包括第二至第七可控开关T2-T7,所述第二可控开关T2的控制端连接所述第四反相器U4的输出端及所述第六可控开关T6的控制端,所述第二可控开关T2的输入端连接所述第三可控开关T3的输入端及所述开启电压端VGH,所述第二可控开关T2的输出端连接所述第三可控开关T3的输出端及所述第四可控开关T4的输入端,所述第三可控开关T3的控制端连接所述第三时钟信号,所述第四可控开关T4的控制端连接所述第二控制信号及所述第七可控开关T7的控制端,所述第四可控开关T4的输出端连接所述输出模块300及所述第五及第七可控开关T5、T7的输出端,所述第五可控开关T5的输入端连接所述第六可控开关T6的输出端,所述五可控开关T5的控制端连接所述第三时钟信号,所述第六可控开关T6的输入端连接所述第七可控开关T7的输入端及所述关闭电压端VGL。
请参阅图5,是本发明的第四实施例的扫描驱动电路的结构示意图。如图5所示,所述第四实施例的扫描驱动电路与所述第一实施例的扫描驱动电路的区别之处在于:所述逻辑处理模块200包括第二至第七可控开关T2-T7,所述第二可控开关T2的控制端连接所述第二控制信号及所述第七可控开关T7的控制端,所述第二可控开关T2的输入端连接所述开启电压端VGH,所述第二可控开关T2的输出端连接所述第三及第四可控开关T3、T4的输入端,所述第三可控开关T3的控制端连接所述第四反相器U4的输出端及所述第六可控开关T6的控制端,所述第三可控开关T3的输出端连接所述输出模块300、所述第四可控开关T4的输出端、所述第五可控开关T5及所述第七可控开关T7的输出端,所述第四可控开关T4的控制端连接所述第三时钟信号,所述第五可控开关T5的输入端连接所述第六可控开关T6的输出端,所述第五可控开关T5的控制端连接所述第三时钟信号,所述第六可控开关T6输入端连接所述关闭电压端VGL及所述第七可控开关T7的输入端。
所述第一至第四实施例中,所述第二至第四可控开关T2-T4均为PMOS型薄膜晶体管,所述第五至第七可控开关均为NMOS型薄膜晶体管。
所述第一至第四实施例的所述扫描驱动电路1的工作原理如下:
无论所述锁存模块100接收到的第一时钟信号、所述第二时钟信号及所述复位信号的电位如何,且不论所述锁存模块100输出的第一控制信号的电位如何,也不论所述逻辑处理模块200接收到的第三时钟信号电位如何,当所述第二控制信号为高电平信号时,所述第七可控开关T7导通,由于所述第七可控开关T7的输入连接所述关闭电压端VGL,即为低电位,因此所述第七可控开关T7的输出端输出低电平信号给所述输出模块300,所述输出模块300将接收到的低电平信号经过所述第五至第七反向器的运算后输出高电平的扫描驱动信号给所述扫描线,从而使得所有扫描线均实现开启功能。
请参阅图6,是本发明的第五实施例的扫描驱动电路的结构示意图。如图6所示,所述第五实施例的扫描驱动电路与所述第一实施例的扫描驱动电路的区别之处在于:所述逻辑处理模块200包括第二至第五可控开关T2-T5,所述第二可控开关T2的控制端连接所述第四反相器U4的输出端及所述第四可控开关T4的控制端,所述第二可控开关T2的输入端连接所述第三可控开关T3的输入端及所述开启电压端VGH,所述第二可控开关T2的输出端连接所述输出模块300及所述第三可控开关T3及所述第四可控开关T4的输出端,所述第三可控开关T3的控制端连接所述第三时钟信号及所述第五可控开关T5的控制端,所述第四可控开关T4的输入端连接所述第五可控开关T5的输出端,所述第五可控开关T5的输入端连接所述关闭电压端VGL。在本实施例中,所述第二及第三可控开关T2及T3为PMOS型薄膜晶体管,所述第四及第五可控开关T4及T5为NMOS型薄膜晶体管。
所述输出模块300包括第五及第六反相器U5、U6及或非门Y1,所述第五反相器U5的输入端连接所述第四可控开关T4的输出端,所述第五反相器U5的输出端连接所述或非门Y1的第一输入端,所述或非门Y1的第二输入端连接所述第二控制信号,所述或非门Y1的输出端连接所述第六反相器U6的输入端,所述第六反相器U6的输出端连接所述扫描线。
所述第五实施例的所述扫描驱动电路1的工作原理如下:
无论所述锁存模块100接收到的第一时钟信号、所述第二时钟信号及所述复位信号的电位如何,且不论所述锁存模块100输出的第一控制信号的电位如何,也不论所述逻辑处理模块200接收到的第三时钟信号电位如何,假如所述逻辑处理模块200输出高电平信号,则所述高电平信号经过所述输出模块300的第五反相器U5后输出低电平信号给所述或非门Y1的第一输入端,所述第二控制信号输出高电平信号给所述或非门Y1的第二输入端,则所述或非门Y1经过或非运算后输出低电平信号给所述第六反相器U6的输入端,所述反相器U6输出高电平的扫描驱动信号给所述扫描线,从而使得所有扫描线均实现开启功能;假如所述逻辑处理模块200输出低电平信号,则所述低电平信号经过所述输出模块300的第五反相器U5后输出高电平信号给所述或非门Y1的第一输入端,所述第二控制信号Gas输出高电平信号给所述或非门Y1的第二输入端,则所述或非门Y1经过或非运算后输出低电平信号给所述第六反相器U6的输入端,所述反相器U6输出高电平的扫描驱动信号给所述扫描线,从而使得所有扫描线均实现开启功能。
请参阅图7,图7是本发明扫描驱动电路1的波形图。根据图7分析可知,在所述第二控制信号工作期间,即所述第二控制信号维持在高电平状态,此时无论所述锁存模块100输出的第一控制信号及所述第三时钟信号发生任何变化,所述输出模块300均输出高电平的扫描驱动信号,从而使得所有的扫描线均实现开启功能,在所述第二控制信号变为低电平信号后,所述扫描驱动电路1工作正常。
所述第一至第五实施例中仅以一个扫描驱动电路为例进行说明,其中,所述上级控制信号为上级控制信号Q(N-1),所述第一控制信号为第一控制信号Q(N),所述第一时钟信号为第一时钟信号CK1,所述第二时钟信号为第二时钟信号XCK1,所述复位信号为复位信号Reset,所述第三时钟信号为第三时钟信号CK2,所述第二控制信号为第二控制信号Gas,所述扫描线为扫描线Gate。
请参阅图8,为本发明一种液晶显示装置的示意图。所述液晶显示装置包括前述的扫描驱动电路1,所述扫描驱动电路1设置在所述液晶显示装置的两端。
本发明的扫描驱动电路1通过逻辑处理模块对锁存模块输出的第一控制信号与第三时钟信号进行逻辑运算,以在所述第二控制信号工作期间,无论所述第一控制信号与所述第三时钟信号的电位如何变化,所述输出模块都输出高电平的扫描驱动信号给所述扫描线,以此实现所有扫描线开启的功能,利于液晶显示装置特殊功能的实现。
以上仅为本发明的实施方式,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。

Claims (20)

  1. 一种扫描驱动电路,其中,所述扫描驱动电路包括:
    锁存模块(100),用于接收上级控制信号、第一及第二时钟信号及复位信号并对所述上级控制信号、第一及第二时钟信号及复位信号进行运算以获得第一控制信号并对所述第一控制信号进行锁存及输出;
    逻辑处理模块(200),连接所述锁存模块(100),用于接收所述锁存模块(100)输出的第一控制信号并对所述第一控制信号、第二控制信号及第三时钟信号进行逻辑运算以获得逻辑控制信号并将所述逻辑控制信号输出;
    输出模块(300),连接所述逻辑处理模块(200),用于接收所述逻辑处理模块(200)输出的逻辑控制信号并对所述逻辑控制信号及所述第二控制信号进行运算以获得扫描驱动信号,并将所述扫描驱动信号输出;及
    扫描线,连接所述输出模块(300),用于将所述输出模块(300)输出的扫描驱动信号传输至像素单元。
  2. 根据权利要求1所述的扫描驱动电路,其中,所述锁存模块(100)包括第一至第四反相器(U1-U4)及第一可控开关(T1),所述第一反相器(U1)的输入端连接所述第一时钟信号,所述第一反相器(U1)的输出端连接所述第二反相器(U2)的低电平端、所述第二时钟信号及所述第三反相器(U3)的高电平端,所述第二反相器(U2)的输入端连接所述上级控制信号,所述第二反相器(U2)的高电平端连接所述第一反相器(U1)的输入端及所述第三反相器(U3)的低电平端,所述第二反相器(U2)的输出端连接所述第三反相器(U3)的输出端,所述第三反相器(U3)的输入端连接本级控制信号,所述可控开关(T1)的控制端连接所述复位信号,所述可控开关(T1)的输入端连接开启电压端(VGH),所述可控开关(T1)的输出端连接所述第二反相器(U2)的输出端及所述第四反相器(U4)的输入端,所述第四反相器(U4)的输出端连接所述第三反相器(U3)的输入端及所述逻辑处理模块(200)。
  3. 根据权利要求2所述的扫描驱动电路,其中,所述逻辑处理模块(200)包括第二至第七可控开关(T2-T7),所述第二可控开关(T2)的控制端连接所述第二控制信号及所述第七可控开关(T7)的控制端,所述第二可控开关(T2)的输入端连接所述开启电压端(VGH,)所述第二可控开关(T2)的输出端连接所述第三可控开关(T3)及所述第四可控开关(T4)的输入端,所述第三可控开关(T3)的控制端连接所述第四反相器(U4)的输出端及所述第五可控开关(T5)的控制端,所述第三可控开关(T3)的输出端连接所述输出模块(300)、所述第四可控开关(T4)的输出端、所述第五可控开关(T5)及所述第七可控开关(T7)的输出端,所述第四可控开关(T4)的控制端连接所述第三时钟信号,所述第五可控开关(T5)的输入端连接所述第六可控开关(T6)的输出端,所述第六可控开关(T6)的控制端连接所述第三时钟信号,所述第六可控开关(T6)的输入端连接所述关闭电压端(VGL)及所述第七可控开关(T7)的输入端。
  4. 根据权利要求2所述的扫描驱动电路,其中,所述逻辑处理模块(200)包括第二至第七可控开关(T2-T7),所述第二可控开关(T2)的控制端连接所述第四反相器(U4)的输出端及所述第五可控开关(T5)的控制端,所述第二可控开关(T2)输入端连接所述第三可控开关(T3)的输入端及所述开启电压端(VGH),所述第二可控开关(T2)的输出端连接所述第三可控开关(T3)的输出端及所述第四可控开关(T4)的输入端,所述第三可控开关(T3)的控制端连接所述第三时钟信号,所述第四可控开关(T4)的控制端连接所述第二控制信号及所述第七可控开关(T7)的控制端,所述第四可控开关(T4)的输出端连接所述输出模块(300)及所述第五及第七可控开关(T5、T7)的输出端,所述第五可控开关(T5)的输入端连接所述第六可控开关(T6)的输出端,所述第六可控开关(T6)的控制端连接所述第三时钟信号,所述第六可控开关(T6)的输入端连接所述第七可控开关(T7)的输入端及所述关闭电压端(VGL)。
  5. 根据权利要求4所述的扫描驱动电路,其中,所述输出模块(300)包括第五至第七反相器(U3-U7),所述第五反相器(U5)的输入端连接所述第五及第七可控开关(T5、T7)的输出端,所述第五反相器(U5)的输出端连接所述第六反相器(U6)的输入端,所述第六反相器(U6)的输出端连接所述第七反相器(U7)的输入端,所述第七反相器(U7)的输出端连接所述扫描线。
  6. 根据权利要求2所述的扫描驱动电路,其中,所述逻辑处理模块(200)包括第二至第七可控开关(T2-T7),所述第二可控开关(T2)的控制端连接所述第四反相器(U4)的输出端及所述第六可控开关(T6)的控制端,所述第二可控开关(T2)的输入端连接所述第三可控开关(T3)的输入端及所述开启电压端(VGH),所述第二可控开关(T2)的输出端连接所述第三可控开关(T3)的输出端及所述第四可控开关(T4)的输入端,所述第三可控开关(T3)的控制端连接所述第三时钟信号,所述第四可控开关(T4)的控制端连接所述第二控制信号及所述第七可控开关(T7)的控制端,所述第四可控开关(T4)的输出端连接所述输出模块(300)及所述第五及第七可控开关(T5、T7)的输出端,所述第五可控开关(T5)的输入端连接所述第六可控开关(T6)的输出端,所述五可控开关(T5)的控制端连接所述第三时钟信号,所述第六可控开关(T6)的输入端连接所述第七可控开关(T7)的输入端及所述关闭电压端(VGL)。
  7. 根据权利要求6所述的扫描驱动电路,其中,所述输出模块(300)包括第五至第七反相器(U3-U7),所述第五反相器(U5)的输入端连接所述第五及第七可控开关(T5、T7)的输出端,所述第五反相器(U5)的输出端连接所述第六反相器(U6)的输入端,所述第六反相器(U6)的输出端连接所述第七反相器(U7)的输入端,所述第七反相器(U7)的输出端连接所述扫描线。
  8. 根据权利要求2所述的扫描驱动电路,其中,所述逻辑处理模块(200)包括第二至第七可控开关(T2-T7),所述第二可控开关(T2)的控制端连接所述第二控制信号及所述第七可控开关(T7)的控制端,所述第二可控开关(T2)的输入端连接所述开启电压端(VGH),所述第二可控开关(T2)的输出端连接所述第三及第四可控开关(T3、T4)的输入端,所述第三可控开关(T3)的控制端连接所述第四反相器(U4)的输出端及所述第六可控开关(T6)的控制端,所述第三可控开关(T3)的输出端连接所述输出模块(300)、所述第四可控开关(T4)的输出端、所述第五可控开关(T5)及所述第七可控开关(T7)的输出端,所述第四可控开关(T4)的控制端连接所述第三时钟信号,所述第五可控开关(T5)的输入端连接所述第六可控开关(T6)的输出端,所述第五可控开关(T5)的控制端连接所述第三时钟信号,所述第六可控开关(T6)输入端连接所述关闭电压端(VGL)及所述第七可控开关(T7)的输入端。
  9. 根据权利要求8所述的扫描驱动电路,其中,所述输出模块(300)包括第五至第七反相器(U3-U7),所述第五反相器(U5)的输入端连接所述第五及第七可控开关(T5、T7)的输出端,所述第五反相器(U5)的输出端连接所述第六反相器(U6)的输入端,所述第六反相器(U6)的输出端连接所述第七反相器(U7)的输入端,所述第七反相器(U7)的输出端连接所述扫描线。
  10. 根据权利要求2所述的扫描驱动电路,其中,所述逻辑处理模块(200)包括第二至第五可控开关(T2-T5),所述第二可控开关(T2)的控制端连接所述第四反相器(U4)的输出端及所述第四可控开关(T4)的控制端,所述第二可控开关(T2)的输入端连接所述第三可控开关(T3)的输入端及所述开启电压端(VGH),所述第二可控开关(T2)的输出端连接所述输出模块(300)及所述第三可控开关(T3)及所述第四可控开关(T4)的输出端,所述第三可控开关(T3)的控制端连接所述第三时钟信号及所述第五可控开关(T5)的控制端,所述第四可控开关(T4)的输入端连接所述第五可控开关(T5)的输出端,所述第五可控开关(T5)的输入端连接所述关闭电压端(VGL)。
  11. 根据权利要求10所述的扫描驱动电路,其中,所述输出模块(300)包括第五及第六反相器(U5、U6)及或非门(Y1),所述第五反相器(U5)的输入端连接所述第四可控开关(T4)的输出端,所述第五反相器(U5)的输出端连接所述或非门(Y1)的第一输入端,所述或非门(Y1)的第二输入端连接所述第二控制信号,所述或非门(Y1)的输出端连接所述第六反相器(U6)的输入端,所述第六反相器(U6)的输出端连接所述扫描线。
  12. 一种液晶显示装置,其中,所述液晶显示装置包括扫描驱动电路,所述扫描驱动电路包括:
    锁存模块(100),用于接收上级控制信号、第一及第二时钟信号及复位信号并对所述上级控制信号、第一及第二时钟信号及复位信号进行运算以获得第一控制信号并对所述第一控制信号进行锁存及输出;
    逻辑处理模块(200),连接所述锁存模块(100),用于接收所述锁存模块(100)输出的第一控制信号并对所述第一控制信号、第二控制信号及第三时钟信号进行逻辑运算以获得逻辑控制信号并将所述逻辑控制信号输出;
    输出模块(300),连接所述逻辑处理模块(200),用于接收所述逻辑处理模块(200)输出的逻辑控制信号并对所述逻辑控制信号及所述第二控制信号进行运算以获得扫描驱动信号,并将所述扫描驱动信号输出;及
    扫描线,连接所述输出模块(300),用于将所述输出模块(300)输出的扫描驱动信号传输至像素单元。
  13. 根据权利要求12所述的液晶显示装置,其中,所述锁存模块(100)包括第一至第四反相器(U1-U4)及第一可控开关(T1),所述第一反相器(U1)的输入端连接所述第一时钟信号,所述第一反相器(U1)的输出端连接所述第二反相器(U2)的低电平端、所述第二时钟信号及所述第三反相器(U3)的高电平端,所述第二反相器(U2)的输入端连接所述上级控制信号,所述第二反相器(U2)的高电平端连接所述第一反相器(U1)的输入端及所述第三反相器(U3)的低电平端,所述第二反相器(U2)的输出端连接所述第三反相器(U3)的输出端,所述第三反相器(U3)的输入端连接本级控制信号,所述可控开关(T1)的控制端连接所述复位信号,所述可控开关(T1)的输入端连接开启电压端(VGH),所述可控开关(T1)的输出端连接所述第二反相器(U2)的输出端及所述第四反相器(U4)的输入端,所述第四反相器(U4)的输出端连接所述第三反相器(U3)的输入端及所述逻辑处理模块(200)。
  14. 根据权利要求13所述的液晶显示装置,其中,所述逻辑处理模块(200)包括第二至第七可控开关(T2-T7),所述第二可控开关(T2)的控制端连接所述第二控制信号及所述第七可控开关(T7)的控制端,所述第二可控开关(T2)的输入端连接所述开启电压端(VGH,)所述第二可控开关(T2)的输出端连接所述第三可控开关(T3)及所述第四可控开关(T4)的输入端,所述第三可控开关(T3)的控制端连接所述第四反相器(U4)的输出端及所述第五可控开关(T5)的控制端,所述第三可控开关(T3)的输出端连接所述输出模块(300)、所述第四可控开关(T4)的输出端、所述第五可控开关(T5)及所述第七可控开关(T7)的输出端,所述第四可控开关(T4)的控制端连接所述第三时钟信号,所述第五可控开关(T5)的输入端连接所述第六可控开关(T6)的输出端,所述第六可控开关(T6)的控制端连接所述第三时钟信号,所述第六可控开关(T6)的输入端连接所述关闭电压端(VGL)及所述第七可控开关(T7)的输入端。
  15. 根据权利要求13所述的液晶显示装置,其中,所述逻辑处理模块(200)包括第二至第七可控开关(T2-T7),所述第二可控开关(T2)的控制端连接所述第四反相器(U4)的输出端及所述第五可控开关(T5)的控制端,所述第二可控开关(T2)输入端连接所述第三可控开关(T3)的输入端及所述开启电压端(VGH),所述第二可控开关(T2)的输出端连接所述第三可控开关(T3)的输出端及所述第四可控开关(T4)的输入端,所述第三可控开关(T3)的控制端连接所述第三时钟信号,所述第四可控开关(T4)的控制端连接所述第二控制信号及所述第七可控开关(T7)的控制端,所述第四可控开关(T4)的输出端连接所述输出模块(300)及所述第五及第七可控开关(T5、T7)的输出端,所述第五可控开关(T5)的输入端连接所述第六可控开关(T6)的输出端,所述第六可控开关(T6)的控制端连接所述第三时钟信号,所述第六可控开关(T6)的输入端连接所述第七可控开关(T7)的输入端及所述关闭电压端(VGL)。
  16. 根据权利要求13所述的液晶显示装置,其中,所述逻辑处理模块(200)包括第二至第七可控开关(T2-T7),所述第二可控开关(T2)的控制端连接所述第四反相器(U4)的输出端及所述第六可控开关(T6)的控制端,所述第二可控开关(T2)的输入端连接所述第三可控开关(T3)的输入端及所述开启电压端(VGH),所述第二可控开关(T2)的输出端连接所述第三可控开关(T3)的输出端及所述第四可控开关(T4)的输入端,所述第三可控开关(T3)的控制端连接所述第三时钟信号,所述第四可控开关(T4)的控制端连接所述第二控制信号及所述第七可控开关(T7)的控制端,所述第四可控开关(T4)的输出端连接所述输出模块(300)及所述第五及第七可控开关(T5、T7)的输出端,所述第五可控开关(T5)的输入端连接所述第六可控开关(T6)的输出端,所述五可控开关(T5)的控制端连接所述第三时钟信号,所述第六可控开关(T6)的输入端连接所述第七可控开关(T7)的输入端及所述关闭电压端(VGL)。
  17. 根据权利要求13所述的液晶显示装置,其中,所述逻辑处理模块(200)包括第二至第七可控开关(T2-T7),所述第二可控开关(T2)的控制端连接所述第二控制信号及所述第七可控开关(T7)的控制端,所述第二可控开关(T2)的输入端连接所述开启电压端(VGH),所述第二可控开关(T2)的输出端连接所述第三及第四可控开关(T3、T4)的输入端,所述第三可控开关(T3)的控制端连接所述第四反相器(U4)的输出端及所述第六可控开关(T6)的控制端,所述第三可控开关(T3)的输出端连接所述输出模块(300)、所述第四可控开关(T4)的输出端、所述第五可控开关(T5)及所述第七可控开关(T7)的输出端,所述第四可控开关(T4)的控制端连接所述第三时钟信号,所述第五可控开关(T5)的输入端连接所述第六可控开关(T6)的输出端,所述第五可控开关(T5)的控制端连接所述第三时钟信号,所述第六可控开关(T6)输入端连接所述关闭电压端(VGL)及所述第七可控开关(T7)的输入端。
  18. 根据权利要求17所述的液晶显示装置,其中,所述输出模块(300)包括第五至第七反相器(U3-U7),所述第五反相器(U5)的输入端连接所述第五及第七可控开关(T5、T7)的输出端,所述第五反相器(U5)的输出端连接所述第六反相器(U6)的输入端,所述第六反相器(U6)的输出端连接所述第七反相器(U7)的输入端,所述第七反相器(U7)的输出端连接所述扫描线。
  19. 根据权利要求13所述的液晶显示装置,其中,所述逻辑处理模块(200)包括第二至第五可控开关(T2-T5),所述第二可控开关(T2)的控制端连接所述第四反相器(U4)的输出端及所述第四可控开关(T4)的控制端,所述第二可控开关(T2)的输入端连接所述第三可控开关(T3)的输入端及所述开启电压端(VGH),所述第二可控开关(T2)的输出端连接所述输出模块(300)及所述第三可控开关(T3)及所述第四可控开关(T4)的输出端,所述第三可控开关(T3)的控制端连接所述第三时钟信号及所述第五可控开关(T5)的控制端,所述第四可控开关(T4)的输入端连接所述第五可控开关(T5)的输出端,所述第五可控开关(T5)的输入端连接所述关闭电压端(VGL)。
  20. 根据权利要求19所述的液晶显示装置,其中,所述输出模块(300)包括第五及第六反相器(U5、U6)及或非门(Y1),所述第五反相器(U5)的输入端连接所述第四可控开关(T4)的输出端,所述第五反相器(U5)的输出端连接所述或非门(Y1)的第一输入端,所述或非门(Y1)的第二输入端连接所述第二控制信号,所述或非门(Y1)的输出端连接所述第六反相器(U6)的输入端,所述第六反相器(U6)的输出端连接所述扫描线。
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